Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
  • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
  • B62D1/16—Steering columns
  • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
  • B62D1/184—Mechanisms for locking columns at selected positions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
  • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
  • B62D1/16—Steering columns
  • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
  • B62D1/187—Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustment; with tilt and axial adjustment
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
  • F16B2200/93—Fastener comprising feature for establishing a good electrical connection, e.g. electrostatic discharge or insulation feature
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
  • F16H19/001—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for conveying reciprocating or limited rotary motion

Definitions

• the present invention relates to an adjustable steering column of a
• Adjustable steering columns are used to adjust the position of the steering wheel to the driver's seating position and are known in various embodiments. In many vehicles, the vertical inclination of the steering column and / or the distance of the steering wheel to the driver can be adjusted. After adjusting the steering column, this is fixed in the desired position. For this purpose, a variety of clamping mechanisms for adjustable in the axial and / or vertical direction steering columns of motor vehicles is known. As for locking the clamping mechanism despite the use of
• the laid-open specification FR 2 687 628 A1 discloses a clamping mechanism which can be activated by means of an electrical actuating element.
• the steering column is fixed in a specific position selected by the driver through the clamping mechanism.
• Confirmation element operable tendon holds the clamping mechanism in a clamping position.
• the clamping member is brought from its clamping position in a non-clamping position, so that the clamping mechanism is disabled and thus the steering column is movable relative to the vehicle-fixed connection.
• the driver presses a button that activates an electric motor to release the steering wheel.
• the motor drives the tendon, which is thereby brought into non-tensioned position.
• DE 603 05 795 T2 discloses an electrical clamp for a steering column, wherein the Clamping device is mounted by means of a mounting rod or a mounting bracket to the steering column.
• a disadvantage of this solution is the complex structure of the clamping device and the resulting limited modularity.
• Worm wheel is rotatably mounted and fixed relative to the rotation of a fixed cam disc by means of a seat plate on the housing. Disadvantages are the high number of components and the associated costs.
• Lifting mechanism has two lifting discs, wherein a first lifting disc is rotatably connected to the clamping bolt and a second lifting disc on the clamping bolt is axially displaceably guided in the housing, and wherein the housing is floatingly mounted on the second lifting disc.
• This structure is particularly compact and inexpensive because it can be dispensed with additional attachment points to connect the fixing device to the steering column.
• the lifting mechanism is as a
• Cam mechanism formed wherein the first lifting disc is formed as a first cam disc and the second lifting disc as a second cam disc. By a relative rotation of the first and the second cam disc, a stroke is generated.
• cam gears are well known in the art. For this reason, a detailed description of this cam mechanism is omitted here.
• At least one rolling element is arranged between the first cam disk and the second cam disk.
• this rolling element is designed as a roller, needle or ball.
• Rolling element rolls between the cams, so that the friction during operation can be reduced.
• Hub disc and the second lifting disc arranged at least two pins, which are converted by the rotation of the first lifting disc relative to the second lifting disc, starting from the release position in the fixing position from an inclined position to an extended position.
• tilting pin lifting mechanisms are known in the art.
• the pins By tilting the pins, a hub is generated.
• the pins preferably comprise two rounded heads, the first head being received in a first pocket of the first lifting disk and the second head being received in a second pocket of the second lifting disk.
• a guide clip is provided, which is arranged between the holding part and the jacket tube and which guides the jacket tube in the longitudinal direction. It is advantageous if the
• Guide clip is pivotally mounted about a pivot axis in the holding part and thus allows a height adjustment of the steering column.
• a rotor shaft of the electric motor is rotatably connected to a worm, wherein the worm meshes with a worm wheel which is rotatably connected to the first lifting disc.
• the worm wheel preferably has a base area of a circular sector.
• the base of the worm wheel is arranged orthogonal to an axis about which the worm wheel at least partially rotates. It is not necessary to form the worm wheel as a complete worm wheel, since this does not perform full rotation, but only a rotation by an angle less than 360 °, preferably less than 90 ° and most preferably less than 55 °.
• the two lifting discs act as a lifting gear with the support bearing to provide a clamping stroke for the fixing position of the fixing together.
• the housing in addition to the electric motor and the worm gear is housed in the housing and the housing is fixed to a side cheek of the holding part.
• the housing can thus move with the side cheek.
• a tension spring is arranged between the housing and the worm wheel, which serves as a closing aid for the
• Fixing device is provided and in the transfer of the
• Fixing device in the release position by rotation of the worm wheel is biased.
• the tension spring helps the electric motor transition to the fixation position, allowing a weaker and less expensive electric motor to be used without lengthening the closing time.
• This locking device brings an additional holding force against a longitudinal adjustment of the steering column in the event of an accident of the vehicle.
• a fixing washer between the second lifting disk and the side wall of the holding part which is close to it, which is connected in a rotationally fixed manner to the second lifting disk and which in the fixing position of the fixing device interacts with the side wall of the holding part to prevent displacement in the direction of the height adjustment forms.
• Fixing disc and the second lifting disc with little clearance are interconnected.
• the second lifting disc has a circular base body with two radially projecting lugs, said approaches in the
• the radially projecting lugs may have a dovetail profile, wherein these are rotatably but slidably received in the corresponding recess of the housing.
• the Dovetail profile can be realized a good support and smooth movement in the housing.
• Fig. 1 a three-dimensional representation of a steering column with an electromechanical fixing device in the fixing position
• Fig. 2 an exploded view of the fixing device without
• Fig. 3 a perspective detail view of the fixing device
• Fig. 4 a spatial representation of the fixing device
• Fig. 5 a longitudinal section through the fixing device
• Fig. 6 a side detail view of the fixing device in FIG.
• Fig. 7 a side detail view of the fixing device in FIG.
• Fig. 8 shows a longitudinal section through the steering column in the fixed state with a lifting mechanism in a first embodiment
• Fig. 9 a longitudinal section through the steering column in released
• Fig. 10 a spatial representation of the steering column from below with
• Fig. 11 a spatial representation of the steering column of FIG. 10 with the
• Fig. 12 a longitudinal section through the steering column in the fixed state with a lifting mechanism in a second
• Fig. 13 a longitudinal section through the steering column in released
• Fig. 14 a longitudinal section through the steering column in the fixed state
• Fig. 15 a longitudinal section through the steering column in the released
• a steering column 1 which comprises a steering shaft 2, which is rotatably mounted about its axis of rotation 3 in a steering shaft bearing unit 4 with a jacket tube 5.
• the jacket tube 5 is in one
• Guide clip 6 slidably guided along the longitudinal axis of the steering shaft 2.
• the guide bracket 6 is pivotally mounted about a pivot axis 7 in a bracket or generally a holding part 8.
• the holding part 8 can in attachment points 9 on the body, not shown a
• Height direction 11 denotes, and in its length in a second
• Adjusting direction also referred to as the longitudinal direction 12, to be adjusted.
• a fixing device 13 which comprises a tensioning device 14.
• the tensioning apparatus 14 has a clamping bolt 15, a lifting mechanism 16, a support bearing 17 and an electric motor 18. By twisting the Clamping bolt 15 are in this embodiment, two cams of the
• Lifting mechanism 16 rotated against each other and the side cheeks 19, 20 of the holding part 8 contracted, whereby a frictional clamping of the side cheeks 19, 20 of the holding part 8 with the side surfaces of the
• the clamping bolt 15 passes through slots in the side cheeks 19, 20 of the holding part 8 and holes in the side surfaces of the guide bracket 6.
• the cam mechanism 16 is on the electric motor near the end of
• Clamping bolt 15 is arranged.
• Cam mechanism 16 and the support bearing 17 is arranged.
• the fixing device can optionally in a release position, also called open position, or a
• Fxier ein also called closed position, to be switched.
• the steering shaft 2, or the attached steering wheel (not shown in the figures) can be adjusted in position, in particular in the longitudinal direction and the height or
• the electro-mechanical fixing device 13 is in one
• Exploded view in detail It comprises the electric motor 18 whose rotor shaft 21 is non-rotatably connected to a worm 22.
• the worm 22 meshes with a worm wheel 23 which is rotatably connected to a first cam disc 24 and cooperates with a second cam 25 as a lifting gear for providing a clamping stroke.
• the electric motor 18 and a gear consisting of worm 22 and worm wheel 23 are arranged in a housing 26, which is pivotably attached to the side cheek 19 of the holding part 8, and outwardly with a housing cover 27, as shown in Figure 3, covered.
• the lifting mechanism 16 is shown in detail.
• the second cam 25 has two of a substantially circular basic shape radially projecting and diametrically opposed lugs 28 and two projecting in the direction of the guide bracket 6 projections 29.
• the housing 26 has a recess 30 for the implementation of the clamping bolt 15, which is formed that she will give a guide 300 for the second
• Cam plate 25 forms only in the axial direction. A rotation of the second cam 25 with the clamping bolt 15 is thus excluded.
• the housing 26 of the electro-mechanical fixing device 13 is
• a fixing plate 31 is provided, which is arranged on the clamping bolt 15 between the second cam 25 and the holding part 8 and in the tensioned state in a toothing 333 of the holding part 8 with two toothed sides 33 engages around the position of the housing 26 in the holding part 8 in Secure direction of height adjustment.
• the fixing disk 31 is seated non-rotatably on the projections 29 of the second cam disk 25.
• the fixing disk 31 comprises two leaf-spring-like legs 32
• Rotor shaft 21 of the electric motor 18 with the worm 22 is rotatably connected.
• the rotor shaft 18 and the worm 22 are arranged perpendicular to the clamping bolt 15.
• the worm 22 meshes with the sector-shaped worm wheel 23, which rotates about the axis of rotation of the clamping bolt 15.
• FIGS. 6 and 7 illustrate an advantageous embodiment of the steering column 1 according to the invention with a closing aid 34 for the
• a helical tension spring 35 is between the
• the tension spring 35 When transferring the fixing in the release position, the tension spring 35 is biased by rotation of the worm wheel 23 together with the clamping axis 15.
• the stored energy in the tension spring 35 is responsible for the transfer of the device in the fixing position available and thus supports the electric motor 18 when closing the fixing device 13. This allows a weaker and cheaper electric motor 18 can be used without extending the closing time.
• a foam body 351 In the interior of the tension spring 35, a foam body 351 is arranged, which dampens the vibrations of the tension spring and thus
• the first cam plate 24 is rotated relative to the second cam 25 until the two components interlock and reduce their depth.
• the second cam 25 in the housing 26 moves axially in the direction of the worm wheel 23 and the support bearing 17 and the fixing disc 31 are released by means of the two leaf spring-like legs 32 of the side cheeks 19, 20 of the holding part 8.
• the tension of the fixing device 13 is thus released and the steering column 1 is released for adjustment.
• FIG. 10 shows the fixing position and the figure 11, the release position of the steering column 1 in a perspective view.
• a locking device 36 can be seen particularly well, by which an additional holding force against a longitudinal adjustment of the steering column 1 in the event of an accident of the vehicle is applied.
• a locking hook 37 is arranged and on
• Jacket tube 5 is disposed on the parallel to the axis of the clamping bolt 15 upper side wall 38, a counter-locking element 39.
• Anti-locking element 39 has a plurality of longitudinally
• Clamping bolt 15 is rotated about its axis and with it the locking hook 37.
• the locking hook 37 In the open state, the release position, the locking hook 37 is spaced from the anti-locking element 39 and in the closed state, the fixing position, the fixing hook 37 is preferably resiliently in contact with brought to the anti-securement part 39.
• Locking device 36 is known for example from German Patent DE 10 2008 016 742 B4.
• FIGS. 12 and 13 The operation of the fixing device 13 with a lifting mechanism 16 in a third embodiment is illustrated in FIGS. 12 and 13 in the form of a longitudinal section. These are in the figures 12 and 13 is a simplified schematic representation to increase the clarity.
• the rest of the steering column has an identical structure as the
• Clamping bolt 15 is a rotatably connected first lifting disc 241th rotated with respect to a second lifting plate 251, wherein between the
• Hubiden 241, 251 two rolling elements 311 are arranged in
• Hub disc 241 is formed, added. Due to the interaction of the two lifting discs 241, 251, the distance between the changes
• Holding part 8 is supported and thereby the support bearing 17 against the
• Fixing device is now clamped so that the side cheeks 19, 20 of the holding part 8 are contracted, whereby a frictional clamping of the side cheeks 19, 20 of the holding part 8 with the side surfaces of the
• Lifting mechanism 16 with the lifting discs 241, 251 and the rolling elements 311 is known for example from German Patent Application DE 10 2008 029 247 AI.
• FIGS. 14 and 15 The operation of the fixing device 13 with a lifting mechanism 16 in a second embodiment is illustrated in FIGS. 14 and 15 in the form of a longitudinal section. These are in the figures 14 and 15 is a simplified schematic representation in order to increase the clarity.
• the rest of the steering column has an identical structure as the
• the adjustable steering column 1 has an electromechanical fixing device 13 with a particularly compact construction.
• the housing 26, 27 of the fixing device 13 is floatingly mounted on the second cam plate 25 and can move in the axial direction of the clamping bolt 15. An additional attachment of the housing 26, 27 on the body is thus not necessary.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• General Engineering & Computer Science (AREA)
• Steering Controls (AREA)
• Power Steering Mechanism (AREA)
• Gear Transmission (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

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ID=56117738

Family Applications (1)

Country Status (7)

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Citations (6)

Family Cites Families (18)

• 2015
  • 2015-06-19 DE DE102015007784.8A patent/DE102015007784B4/de active Active
• 2016
  • 2016-06-13 WO PCT/EP2016/063434 patent/WO2016202715A1/de active Application Filing
  • 2016-06-13 ES ES16728335T patent/ES2729724T3/es active Active
  • 2016-06-13 EP EP16728335.7A patent/EP3310639B1/de active Active
  • 2016-06-13 PL PL16728335T patent/PL3310639T3/pl unknown
  • 2016-06-13 CN CN201680035630.XA patent/CN107810136B/zh active Active
  • 2016-06-13 US US15/736,004 patent/US10449992B2/en active Active

Patent Citations (6)

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